Losing hair is a normal occurrence. In fact, we lose between 50 and 150 hairs on a daily basis. The hair follicles in our scalps go through growth cycles, where a hair falls out but grows back again within a few months. The new hair will last for 2 to 7 years before being replaced. Your follicles are always in different stages of the growth cycle, so it always appears that you have abundant hair on your head.